OBJECTIVE LIFE SCIENCE
PLANT PHYSIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Chl a
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Bacteriochlorophyll
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Chl c
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Pheophytin
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Detailed explanation-1: -Pheophytin or Pheo is a chlorophyll molecule lacking a central Mg2+ ion which serves as the first electron carrier intermediate in the electron transfer pathway of photosystem II in plants and the photosynthetic reaction center RC P870 found in purple bacteria.
Detailed explanation-2: -Mg2+ is the central atom of the chlorophyll molecule, and fluctuations in its levels in the chloroplast regulate the activity of key photosynthetic enzymes.
Detailed explanation-3: -Pheophytin, a natural degradation product of chlorophyll, has an absorption peak in the same spectral region as chlorophyll a.
Detailed explanation-4: -Chlorophyll c lacks phytol tail while all other types present this long chain hydrocarbon. Note:Reason behind the green colour of leaves lies within the chlorophyll. Chlorophyll molecules absorb only red, blue and violet lights in the visible spectrum and it reflects green.